---
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title: Transform Context Data and Write Data to JSON with Data Processing Engine
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/262-0-0/rn_dpe_context_service_integration.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_dpe_context_service_integration.htm&release=262.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: e39cdd0f15d1b42e0563eea3d995df1026c65f4d543c028bd34fe496dc665f0c
description: Use Data Processing Engine (DPE) to read data from context definitions and write it to JSON to support high-volume data transformations for processes such as document generation. Use DPE in place of Apex plug-ins to scale transformations for complex product hierarchies and groupings without hitting governor limits.
products:
  - Cross Cloud
release: "262"
---
# Transform Context Data and Write Data to JSON with Data Processing Engine

Use Data Processing Engine (DPE) to read data from context definitions and write it to JSON to support high-volume data transformations for processes such as document generation. Use DPE in place of Apex plug-ins to scale transformations for complex product hierarchies and groupings without hitting governor limits.

**Where:** This change applies to Lightning Experience in Professional, Enterprise, Unlimited, and Developer editions where Data Processing Engine and Data Processing Engine On Demand are available.

**Who:** To use this feature, you need the Data Processing Engine On Demand permission set license and the Run Data Processing Engine Definitions On Demand permission set.

**How:** In a DPE definition, select a context definition as the data source. To send transformed data to downstream processes, create a JSON type Writeback Object node.

#### See Also

- [_Salesforce Help_: Context Service](https://help.salesforce.com/s/articleView?id=ind.context_service.htm&language=en_US)
- [_Salesforce Help_: Integrate Data Processing Engine with Context Service](https://help.salesforce.com/s/articleView?id=ind.dpe_integrate_context_service.htm&language=en_US)
- [_Salesforce Help_: Transform a Context Definition](https://help.salesforce.com/s/articleView?id=ind.ctx_transform_with_dpe.htm&language=en_US)